Sagot :
J= 100x²-(5-4x)²
(10x)²-(5-4x)²
(10x+5-4x) (10x-(5-4x))
(6x+5) (10x-5+4x)
(6x+5) (14x-5)
Pou le I je ne sais plus.
(10x)²-(5-4x)²
(10x+5-4x) (10x-(5-4x))
(6x+5) (10x-5+4x)
(6x+5) (14x-5)
Pou le I je ne sais plus.
I=5x²-10x(4x-3)
=5x²+40x²+30x
=45x²+30x
=15x(3x+2)
J=100x²-(5-4x)²
= 100x²-(25-40x+16x²)
=100x²-25+40x-16x²
=84x²+40x-25
=5(84/5x²+10x+5)
=5x²+40x²+30x
=45x²+30x
=15x(3x+2)
J=100x²-(5-4x)²
= 100x²-(25-40x+16x²)
=100x²-25+40x-16x²
=84x²+40x-25
=5(84/5x²+10x+5)